M58LT128GST datasheet(33/98 Pages) STMICROELECTRONICS

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M58LT128GST, M58LT128GSB

5 Status Register

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5.6

Program Suspend Status Bit (SR2)

The Program Suspend Status bit indicates that a program operation has been suspended in the

addressed block. The Program Suspend Status bit should only be considered valid when the

Program/Erase Controller Status bit is High (Program/Erase Controller inactive).

When the Program Suspend Status bit is High (set to ‘1’), a Program/Erase Suspend command

has been issued and the memory is waiting for a Program/Erase Resume command.

SR2 is set within the Program Suspend Latency time of the Program/Erase Suspend command

being issued therefore the memory may still complete the operation rather than entering the

Suspend mode.

When a Program/Erase Resume command is issued the Program Suspend Status bit returns

Low.

SR1. Reserved.

5.7

Bank Write/Multiple Word Program Status Bit (SR0)

The Bank Write Status bit indicates whether the addressed bank is programming or erasing. In

Buffer Enhanced Factory Program mode the Multiple Word Program bit shows if the device is

ready to accept a new Word to be programmed to the memory array.

The Bank Write Status bit should only be considered valid when the Program/Erase Controller

Status SR7 is Low (set to ‘0’).

When both the Program/Erase Controller Status bit and the Bank Write Status bit are Low (set

to ‘0’), the addressed bank is executing a program or erase operation. When the Program/Erase

Controller Status bit is Low (set to ‘0’) and the Bank Write Status bit is High (set to ‘1’), a

program or erase operation is being executed in a bank other than the one being addressed.

In Buffer Enhanced Factory Program mode if Multiple Word Program Status bit is Low (set to

‘0’), the device is ready for the next Word, if the Multiple Word Program Status bit is High (set to

‘1’) the device is not ready for the next Word.

For further details on how to use the Status Register, see the Flowcharts and Pseudo codes

provided in Appendix C.

M58LT128GST Datasheet(PDF) 33 Page - STMicroelectronics